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Function `std.path.extension`


						
				auto auto extension(R)
				(
				

				  R path
				

				)
				

				if (isRandomAccessRange!R && hasSlicing!R && isSomeChar!(ElementType!R) || is(StringTypeOf!R));

Parameters

Name	Description
path	A path name.

Returns

The extension part of a file name, including the dot.

If there is no extension, null is returned.

Example

import std.range : empty;
assert(extension("file").empty);
writeln(extension("file.")); // "."
writeln(extension("file.ext"w)); // ".ext"
writeln(extension("file.ext1.ext2"d)); // ".ext2"
assert(extension(".foo".dup).empty);
writeln(extension(".foo.ext"w.dup)); // ".ext"

static assert(extension("file").empty);
static assert(extension("file.ext") == ".ext");

Authors

Lars Tandle Kyllingstad, Walter Bright, Grzegorz Adam Hankiewicz, Thomas Kühne, Andrei Alexandrescu

License

Boost License 1.0